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Actively exploited in the wild. This CVE is on the CISA Known Exploited Vulnerabilities list — treat remediation as urgent. Federal remediation due by 1 Jun 2026.
Pan OsOperating system · Paloaltonetworks

CVE-2026-0257

CRITICAL · 9.1 CVSS v3.1 Published 2026-05-13
Fix available
A fix is available. Upgrade to 10.2.7 or later.
See remediation →
100/100
Remediation priority · Urgent
In the wild High EPSS Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

In the news

Third-party coverage
Trending covered by 2 outlets this week · latest 4w ago

Surfaced from public web coverage — external links open in a new tab.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

This is a critical authentication bypass vulnerability in Palo Alto Networks PAN-OS GlobalProtect portal and gateway. The flaw allows unauthenticated attackers to bypass security controls and establish unauthorized VPN connections, potentially granting them access to internal networks as if they were legitimate remote users.

MitigationApply the vendor-supplied PAN-OS patches for this vulnerability immediately; review GlobalProtect connection logs for signs of unauthorized access and consider temporary network-level restrictions on GlobalProtect portals until patching is complete.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Pan OsOperating system
Affected:< 10.2.7= 10.2.7= 10.2.8= 10.2.9= 10.2.10= 10.2.11= 10.2.12= 10.2.13= 10.2.14= 10.2.15= 10.2.16= 10.2.17
Prisma AccessApplication
Affected:all versions
Ruggedcom Ape1808 FirmwareOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Determine PAN-OS version
    Access the firewall management interface or use 'show system info' command in CLI to retrieve the installed PAN-OS version number
    Affected if The installed version matches any of these: < 10.2.7, = 10.2.7, = 10.2.8, = 10.2.9, = 10.2.10, = 10.2.11, = 10.2.12, = 10.2.13, = 10.2.14, = 10.2.15, = 10.2.16, = 10.2.17
  2. Verify GlobalProtect service status
    Check the firewall or appliance configuration to confirm whether GlobalProtect portal or GlobalProtect gateway is enabled and configured
    Affected if GlobalProtect portal or gateway is active and accepting connections
  3. Confirm Prisma Access deployment
    Check if your environment includes Prisma Access VPN service deployment and retrieve the software version if accessible
    Affected if Prisma Access is deployed (all versions are affected)
  4. Identify Siemens Ruggedcom Ape1808 usage
    Determine if your environment includes Siemens Ruggedcom Ape1808 devices running the affected firmware
    Affected if Siemens Ruggedcom Ape1808 is in use (all firmware versions are affected)

You are affected if your PAN-OS version is any of the listed vulnerable versions OR you use Prisma Access OR you use Siemens Ruggedcom Ape1808 firmware, AND GlobalProtect is enabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 10.2.7 or later
Fixed in 10.2.7
Interim mitigation

Apply the vendor-supplied PAN-OS patches for this vulnerability immediately; review GlobalProtect connection logs for signs of unauthorized access and consider temporary network-level restrictions on GlobalProtect portals until patching is complete.

Fix this in Pan Os Exploited in the wild — priority engagement
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
27.0 hours of engineering $4,800
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-0257 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data